Inner paperboard for cigarette

Abstract

The utility model provides inner paperboard for cigarettes, and belongs to the technical field of cigarette packaging paper. The inner paperboard comprises an inner paperboard body, the inner paperboard body comprises an inner lining layer, a buffer layer, a base body layer and an outer protective layer, and the inner lining layer, the buffer layer, the base body layer and the outer protective layer are sequentially distributed from inside to outside; the foamed polyethylene film of the buffer layer, the buffer cavity with the narrow outer portion and the wide inner portion and the silica gel buffer table form a multi-stage buffer system, during transportation and storage, under the impact of external force, the buffer cavity absorbs and disperses pressure, the buffer table deforms and buffers, and filter tip breakage and tobacco shred loosening are avoided; the high-density polyethylene microporous film of the outer protective layer is matched with the hydrophobic nano coating, so that water vapor and oxygen are efficiently blocked, the cigarette is prevented from being affected with damp and oxidized, and stable quality is ensured; the buffer layer is combined with the base body layer and is rigid and soft, so that the cigarette can be stably fixed, and the cigarette is prevented from being damaged due to excessive extrusion; when the cigarette case is closed, the buffer layer can reduce friction noise, and better use experience is brought.

Description

Technical Field

[0001] This utility model relates to the field of cigarette packaging paper, and more specifically, to an inner cardboard for cigarettes. Background Technology

[0002] The inner linerboard is a piece of paper placed between the inner lining paper inside the cigarette box and the outer linerboard of the cigarette box. It serves to fix the shape of the cigarette and provide support, and is an indispensable component of hard-pack cigarette packaging.

[0003] Most existing inner cardboard sheets are single-layered or simple multi-layered structures. When cigarettes are subjected to external impacts, vibrations, or pressure, the inner cardboard sheets cannot effectively disperse and absorb these external forces, causing the cigarette to directly bear most of the impact force. This can easily lead to problems such as filter breakage and loose tobacco, affecting the appearance and quality of the cigarette. Furthermore, when the cigarette box is opened and closed, the friction between the inner cardboard sheets and the cigarette or other parts of the cigarette box can generate significant noise, affecting the user's experience.

[0004] How to invent a new type of inner cardboard for cigarettes to solve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an inner cardboard for cigarettes, aiming to solve the problems mentioned in the background.

[0006] This utility model is implemented as follows:

[0007] This utility model provides an inner cardboard for cigarettes, including an inner cardboard body. The inner cardboard body includes an inner lining layer, a buffer layer, a base layer, and an outer protective layer. The inner lining layer, buffer layer, base layer, and outer protective layer are distributed sequentially from the inside to the outside. Adjacent layers of the inner lining layer, buffer layer, base layer, and outer protective layer are fixed by hot pressing or adhesive. A shock-absorbing and breathable component is provided in the buffer layer. The shock-absorbing and breathable component includes several buffer cavities opened on one side of the buffer layer and several air guiding channels opened in the buffer layer. A baffle is provided on the side of the buffer layer away from the buffer cavities. A buffer platform is fixed on the side wall of the baffle corresponding to the buffer cavity. The air guiding channels pass through the side walls of the buffer cavities in the same row, and their ends penetrate the upper and lower side walls of the buffer layer.

[0008] Preferably, the buffer cavity is narrow on the outside and wide on the inside, and the cross-section of the buffer cavity is flared.

[0009] Preferably, there is a gap between the buffer platform and the side wall of the buffer cavity, and a gap between the port of the air guide channel and the buffer platform.

[0010] Preferably, the buffer layer and the baffle are both foamed polyethylene films, and the buffer platform is a silicone gel sheet.

[0011] Preferably, the inner lining layer is food-grade silicone-coated paper that has undergone silver ion antibacterial treatment.

[0012] Preferably, the outer protective layer is a high-density polyethylene microporous membrane, and its surface is coated with a hydrophobic nano-coating.

[0013] The beneficial effects of this utility model are:

[0014] The foamed polyethylene film of the buffer layer, the buffer cavity which is narrow on the outside and wide on the inside, and the silicone gel buffer platform form a multi-level buffer system. During transportation and storage, under external impact, the buffer cavity absorbs and disperses the pressure, and the buffer platform deforms to cushion the impact, preventing the filter from breaking and the tobacco from loosening. The high-density polyethylene microporous membrane of the outer protective layer, combined with a hydrophobic nano-coating, effectively blocks moisture and oxygen, preventing the cigarettes from getting damp and oxidizing, and ensuring stable quality. The buffer layer is combined with the base layer, combining rigidity and flexibility, which can firmly fix the cigarettes while preventing excessive compression from damaging them. When the cigarette box is closed, the buffer layer can reduce friction noise and bring a better user experience.

[0015] The inner lining is made of food-grade silicone-coated paper treated with silver ions for antibacterial properties, which inhibits bacterial growth and keeps the inside of the cigarette clean. At the same time, its good flexibility allows it to fit the cigarette tightly, preventing scratches and contamination when it is taken out. The outer protective layer strongly blocks external moisture, while the microporous structure of the base layer and inner lining layer allows for a small amount of air circulation. The buffer layer reduces the impact of humidity fluctuations. The three work together to form a "protective exterior and regulating interior" moisture-proof system, maintaining a stable internal environment for the cigarette. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the inner cardboard for cigarettes provided by an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the inner cardboard for cigarettes provided by an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of an inner cardboard for cigarettes provided by an embodiment of this utility model;

[0020] Figure 4 This utility model provides an inner cardboard for cigarettes. Figure 3 Enlarged structural diagram at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the inner cardboard buffer layer structure for cigarettes provided by an embodiment of the present invention;

[0022] Figure 6 This utility model provides an inner cardboard for cigarettes. Figure 5 Enlarged structural diagram at point B;

[0023] Figure 7 This is a schematic diagram of the internal structure of the inner cardboard buffer layer for cigarettes, provided by an embodiment of this utility model.

[0024] In the diagram: 1. Inner cardboard body; 2. Inner lining layer; 3. Buffer layer; 4. Base layer; 5. Outer protective layer; 6. Buffer cavity; 7. Air duct; 8. Buffer platform; 31. Baffle. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example, refer to Figures 1-7 A cigarette inner cardboard includes an inner cardboard body 1, which comprises an inner lining layer 2, a buffer layer 3, a base layer 4, and an outer protective layer 5. The inner lining layer 2, buffer layer 3, base layer 4, and outer protective layer 5 are distributed sequentially from the inside to the outside. Adjacent layers of the inner lining layer 2, buffer layer 3, base layer 4, and outer protective layer 5 are fixed together by heat pressing or adhesive. A shock-absorbing and breathable assembly is provided within the buffer layer 3. The shock-absorbing and breathable assembly includes several buffer cavities 6 formed on one side of the buffer layer 3 and several air guiding channels 7 formed within the buffer layer 3. A baffle 31 is provided on the side of the buffer layer 3 away from the buffer cavities 6, corresponding to the baffle 31 of the buffer cavities 6. A buffer platform 8 is fixedly installed on the side wall. The buffer platform 8 has good elasticity and shock absorption performance. When external force is applied to the inner cardboard, the buffer platform 8 can further buffer the pressure and reduce the direct impact on the cigarette. The air guide channel 7 passes through the side wall of the buffer cavity 6 in the same row and its end passes through the upper and lower side walls of the buffer layer 3. The buffer layer 3 can absorb the impact force during transportation and storage, protect the cigarette from physical damage (such as filter breakage and loose tobacco), and combine with the base layer 4 to form a "rigid and flexible" structure. While fixing the cigarette, it avoids excessive compression and can also reduce friction noise when the packaging box is closed, thus improving the user experience.

[0027] It should be noted that the buffer chamber 6 is designed to be narrow on the outside and wide on the inside. When subjected to external pressure, the buffer chamber 6 can better absorb and disperse the pressure. The cross-section of the buffer chamber 6 is designed to be funnel-shaped. The funnel shape can make the pressure more evenly distributed in the buffer chamber 6. There is a gap between the buffer platform 8 and the side wall of the buffer chamber 6, and there is a gap between the port of the air guide channel 7 and the buffer platform 8. This allows the buffer platform 8 to have a certain amount of deformation space when subjected to pressure, which enhances the buffering effect and also provides space for gas to pass through.

[0028] Furthermore, both the buffer layer 3 and the baffle 31 are made of foamed polyethylene film, which is lightweight, soft, and elastic. It absorbs the impact during transportation and storage, protecting cigarettes from physical damage (such as filter breakage or loose tobacco). The buffer platform 8 is a silicone gel sheet, and the inner lining layer 2 is food-grade silicone-coated paper treated with silver ions for antibacterial properties. Silver ions have antibacterial properties, inhibiting bacterial growth and reproduction, helping to maintain a hygienic environment inside the cigarette and preventing bacterial growth from affecting cigarette quality. The food-grade silicone-coated paper has good flexibility and adhesion, allowing it to adhere tightly to the cigarette surface, improving... Provides a soft touch, preventing scratches or contamination when cigarettes are removed. The outer protective layer 5 is a high-density polyethylene microporous membrane with excellent barrier properties, effectively preventing moisture, oxygen, and other external substances from entering the cigarette, protecting it from moisture and oxidation. Furthermore, its surface is coated with a hydrophobic nano-coating, giving the outer protective layer 5 superhydrophobicity, preventing moisture from adhering to and penetrating its surface, further improving its moisture-proof performance. The outer protective layer 5 blocks external moisture, while the microporous structure of the base layer 4 and inner lining layer 2 allows for a small amount of air circulation. The buffer layer 3 reduces the impact of humidity fluctuations on the cigarette, forming a "protective exterior and regulating interior" moisture-proof system.

[0029] The working principle of this cigarette inner cardboard is as follows: The inner lining layer 2 is a food-grade silicone-coated paper treated with silver ions for antibacterial properties. Silver ions have antibacterial properties. When cigarettes are stored in the inner cardboard, the silver ions continue to work, inhibiting the growth and reproduction of bacteria in the surrounding environment. This is like establishing an antibacterial defense line around the cigarettes, preventing bacterial contamination and helping to maintain a hygienic environment inside the cigarettes. It also prevents the quality and taste of the cigarettes from being affected by bacterial growth. At the same time, the food-grade silicone-coated paper itself has good flexibility and adhesion. It can adhere tightly to the surface of the cigarettes, providing a soft touch and preventing the cigarettes from being scratched when taken out of the cigarette box. It can also prevent the cigarettes from being contaminated by external dust and other pollutants.

[0030] Both the buffer layer 3 and the baffle 31 are made of foamed polyethylene film. This material is lightweight, soft and elastic. Several buffer cavities 6 with a narrow outer and wide inner cross-section are opened on one side of the buffer layer 3. On the other side of the baffle 31, a buffer platform 8 made of silicone gel sheet is fixed at the position of the buffer cavity 6, and there is a gap between the buffer platform 8 and the side wall of the buffer cavity 6.

[0031] When cigarettes are subjected to external pressure during transportation and storage, the buffer chamber 6 will come into play first. Its flared shape, narrow on the outside and wide on the inside, allows the pressure to be distributed more evenly within the buffer chamber 6, spreading the external force over a larger area for better absorption and dispersion of pressure. At the same time, the buffer platform 8 has good elasticity and shock absorption performance. When external force is transmitted, the buffer platform 8 will deform to further buffer the pressure and reduce direct impact on the cigarettes, such as filter breakage or loose tobacco. When the cigarette box is closed, the buffer layer 3 can reduce friction noise, resulting in a better user experience.

[0032] When the inner cardboard is compressed, air can flow through the air guide channel 7 between the buffer chambers 6 and between the buffer layer 3 and the outside, which can balance the internal and external pressure and prevent the inner cardboard from deforming or being damaged due to pressure changes. At the same time, these gaps also provide a certain deformation space for the buffer platform 8 when it is under pressure, which enhances the buffering effect and ensures the smooth flow of air.

[0033] The base layer 4 serves to support and fix the cigarette. It combines with the buffer layer 3 to form a "rigid and flexible" structure. The "rigidity" of the base layer 4 can provide stable structural support for the entire inner cardboard, while the "flexibility" of the buffer layer 3 can buffer and deform when subjected to external forces. This structural combination can fix the cigarette while avoiding excessive pressure on it, ensuring that the cigarette is in a stable and safe state inside the cigarette box.

[0034] The outer protective layer 5 is a high-density polyethylene microporous membrane with a hydrophobic nano-coating on its surface. The high-density polyethylene microporous membrane itself has excellent barrier properties, acting like a "barrier" to effectively prevent external substances such as water vapor and oxygen from entering the cigarette, preventing the cigarette from getting damp and oxidizing, thereby extending the shelf life of the cigarette. The hydrophobic nano-coating on the surface gives the outer protective layer 5 superhydrophobicity. When water comes into contact with the surface of the outer protective layer 5, it will quickly roll off, which further improves the moisture-proof performance, prevents water from adhering to and penetrating its surface, and ensures that the cigarette is always in a dry environment.

[0035] This inner cardboard forms a "protective exterior and regulating interior" moisture-proof system. The outer protective layer 5, as the outermost layer, mainly plays the role of "external protection." Through its excellent barrier properties and superhydrophobicity, it strongly blocks the intrusion of external moisture. The base layer 4 and the inner lining layer 2 have a microporous structure. These micropores allow a small amount of air to circulate inside the cigarette, playing a certain regulatory role. The buffer layer 3 can reduce the impact of humidity fluctuations on the cigarette. For example, when the external humidity changes suddenly, the buffer layer 3 can buffer the impact of this humidity change to a certain extent, making the humidity environment inside the cigarette relatively stable, thereby better protecting the quality of the cigarette.

[0036] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cigarette inner cardboard, comprising an inner cardboard body (1), characterized in that, The inner cardboard body (1) includes an inner lining layer (2), a buffer layer (3), a base layer (4), and an outer protective layer (5). The inner lining layer (2), the buffer layer (3), the base layer (4), and the outer protective layer (5) are distributed from the inside to the outside. The adjacent layers of the inner lining layer (2), the buffer layer (3), the base layer (4), and the outer protective layer (5) are fixed by hot pressing or adhesive. A shock-absorbing and breathable component is provided in the buffer layer (3). The shock-absorbing and breathable component includes several buffer cavities (6) opened on one side of the buffer layer (3) and several air guiding channels (7) opened in the buffer layer (3). A baffle (31) is provided on the side of the buffer layer (3) away from the buffer cavity (6). A buffer platform (8) is fixed on the side wall of the baffle (31) corresponding to the buffer cavity (6). The air guiding channel (7) passes through the side wall of the buffer cavity (6) in the same row and its end passes through the upper and lower side walls of the buffer layer (3).

2. The inner cardboard for cigarettes according to claim 1, characterized in that, The buffer cavity (6) is narrow on the outside and wide on the inside, and the cross-section of the buffer cavity (6) is flared.

3. The inner cardboard for cigarettes according to claim 1, characterized in that, There is a gap between the buffer platform (8) and the side wall of the buffer cavity (6), and there is a gap between the port of the air guide channel (7) and the buffer platform (8).

4. The inner cardboard for cigarettes according to claim 1, characterized in that, The buffer layer (3) and the baffle (31) are both foamed polyethylene films, and the buffer platform (8) is a silicone gel sheet.

5. The inner cardboard for cigarettes according to claim 1, characterized in that, The inner lining layer (2) is food-grade silicone coated paper that has been treated with silver ion antibacterial agents.

6. The inner cardboard for cigarettes according to claim 1, characterized in that, The outer protective layer (5) is a high-density polyethylene microporous membrane, and its surface is coated with a hydrophobic nano-coating.

Images